OpenAI compatible API. Attested gateway. Public status.

Z.ai: GLM 4.7 vs GLM 5.2 Fast on Fireworks

Compare Z.ai: GLM 4.7 and GLM 5.2 Fast on Fireworks by providers, context, price, and TrustedRouter route support.

Verify gateway
1 URLbase_url migration
100smodels and routes
0prompt logs by default
Compare routesProviders, price, context, and policy posture in one view.
Use auto when uptime mattersKeep a primary model and let fallback handle provider failures.
Same API shapeUse the OpenAI client and set the model you want.

Practical read

Z.ai: GLM 4.7 has the lower cheapest prompt+completion route on TrustedRouter. Z.ai: GLM 4.7 has more provider fallback routes, while GLM 5.2 Fast on Fireworks has the larger context window. Probe-backed speed data is shown when enough recent samples exist.

$2.805/1MZ.ai: GLM 4.7 cheapest route
$12.76/1MGLM 5.2 Fast on Fireworks cheapest route
4468 msZ.ai: GLM 4.7 measured p50 TTFT
not enough dataGLM 5.2 Fast on Fireworks measured p50 TTFT
Z.ai: GLM 4.7GLM 5.2 Fast on Fireworks
Model idz-ai/glm-4.7z-ai/glm-5.2-fast
PublisherZ.AIZ.AI
AI IQ IQ 102#53 —
Context202,752 tokens1,048,576 tokens
Provider routes112
Cheapest route$2.805/1M$12.76/1M
Privacy posturehas provider E2EE routeprovider posture varies
Modes chat chat

Z.ai: GLM 4.7 routes

GLM 5.2 Fast on Fireworks routes

Production choice

Pick a default model. Keep fallback enabled.

TrustedRouter is useful when you know the model you want, but still need provider rollover, budget limits, usage records, and a prompt path you can verify.

OpenAI clientPython
client = OpenAI(
    base_url="https://api.trustedrouter.com/v1",
    api_key="sk-tr-v1-..."
)

response = client.chat.completions.create(
    model="z-ai/glm-4.7",
    messages=messages,
)

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